Algae on sand

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99dnicoll

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I have green algae growing on my pool filter sand. I've replaced it once and it still grows. What could some of the reasons why it grows?

 

thefishdude277

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Do you have plants? If you do, are you dosing liquid ferts?
What is your light schedule?


 
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99dnicoll

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I have plants and dose them every other day with Excel, envy and iron and I also have root tabs. My light is a finnex planted plus and it's on from 12 to 7.

 

Dom90

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You may try reducing the number of hours the light is on and see if that helps.


 

BDpups

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Pool filter sand is high in silicates, which can contribute to algae. Los of water changes will help. Replacing the sand might have just increased the silicates for you.

What kind of plants and how big is the tank?
 

Dom90

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Oh ok silicates... You might try using PhosGuard or something to get rid of them. CindiL can probably tell you more. That's how she got rid of diatoms.


 
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99dnicoll

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BDpups

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What color is the algae?
 

Dom90

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If it were the excess silicates, I'd think it were brown algae or diatoms. But it's peculiar because the OP said its green algae...


 

BDpups

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Missed the green part. Got a pic?
 

Dom90

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First post said "I have green algae......"


 

BDpups

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Yeah I see it now. I'm horrible when it comes to the details sometimes
 

CindiL

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99dnicoll

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Picture

 

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Dom90

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CindiL said:
I just ran across this great article today with pictures! See if you can figure out which one it is. Some green algae is normal and luckily not altogether unattractive but if it covers your substrate then there are tips to help you get rid of it.

http://www.aquahobby.com/articles/e_freshwater_algae.php
Lol I had a recent algae breakout recently


 

BDpups

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99dnicoll said:
Huh. Never seen anything like that. I would stop dosing iron. Or at least cut back on it a lot. And envy, as in the hydroponic fertilizer? https://envybrand.com/

Plants are nice and green though.
 
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99dnicoll

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Yeah

 

BDpups

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This is what I would do. I would only dose with the Excel. I'm going to assume that you have low light plants. And generally the light and the fish waste is enough for them. Dose excel a few times a week, leave the lights on for 7 hours a day, and see how that works.
 
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99dnicoll

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I'll try that for a week but doesn't my red plants need iron to stay red

 

BDpups

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Yeah it helps. But dosing it every other day is too much. What kind of plant is it? Red plants need high light to stay red too. And usually CO2.

So what is all in your tank? Fish and plants? You have a good plant light, and having the light on for 7 hours a day is good too.

EDIT: Who told you to dose the Envy?
 
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